Usher’s 11-year-old stepson has been declared brain dead by doctors after he was struck by a jet ski over the weekend.

Kile Glover, the son of Usher’s ex-wife Tameka Foster, was floating in an inner tube with a female friend on Lake Lanier in Atlanta on Saturday when he was hit in the head by a jet ski driven by a 38-year-old man, who was reportedly part of their group.

“On Friday afternoon, a pontoon boat was pulling an 11-year-old male and 15-year-old girl on an inner tube when a jet ski ran over the two children,” Georgia Department of Natural Resources spokesperson Robin Hill told E! News.

Glover was unresponsive when he was taken from the water and airlifted to Children’s Healthcare of Atlanta at Egleston. The female victim was treated for a cut on the head and a broken arm.

Despite their divorce and ongoing custody battle, Usher chartered a plane for Foster so she could be by her son’s side. The R&B singer arrived at the hospital on Saturday night.

On Sunday, TMZ reported that Glover had been declared brain dead by doctors. A decision has yet to be made as to whether or not to take him off life support.

The family received an outpouring of support on Twitter from their friends including Monica, Ashanti, Toni Braxton, Jermaine Dupri, and Fantasia.

“My heart goes out 2 @TamekaRaymond thru this indescribable time.Im praying 4 u,Kyle,Ryan&ur family may God bestow his Blessings upon u all,” wrote Ashanti, while Fantasia added, “Everyone PLEASE pray for Usher and Tameka’s son! This is the time they really need your prayers!”